The origin of Plaça de Sants station, known simply as Sans in the early years, goes back to the first half of 1923 with the opening of a construction shaft located on the corner of carrer de la Creu Coberta street and carrer d’Alcolea.

The station maintained this layout until the 1940’s, when two new entrances where built at the end opposite to the existing ones, and in 1969 the original entrances and concourse area where updated and a corridor was built to link with the new line 5 station.